6qcn

Human Sirt2 in complex with ADP-ribose and the inhibitor quercetin

Method: X-RAY DIFFRACTION Dmax: 92.0 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

NAD-dependent protein deacetylase sirtuin-2

Homo sapiens

UniProt Q8IXJ6

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 55–356 Not recorded ZN ZINC ION × 1 AR6 [(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXY-OXOLAN-2-YL]METHYL[HYDROXY-[[(2R,3S,4R,5S)-3,4,5-TRIHYDROXYOXOLAN-2-YL]METHOXY]PHOSPHORYL] HYDROGEN PHOSPHATE × 1 QUE 3,5,7,3',4'-PENTAHYDROXYFLAVONE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.8;293 K;14% PEG 10,000, 0.1M ammonium acetate pH 5.8 Resolution 2.23 Å R-free 0.234
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 55–356 Not recorded ZN ZINC ION × 1 AR6 [(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXY-OXOLAN-2-YL]METHYL[HYDROXY-[[(2R,3S,4R,5S)-3,4,5-TRIHYDROXYOXOLAN-2-YL]METHOXY]PHOSPHORYL] HYDROGEN PHOSPHATE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 5.8;293 K;14% PEG 10,000, 0.1M ammonium acetate pH 5.8 Resolution 2.23 Å R-free 0.234

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

77 other PDB entries and 96 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SIR2_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–304; UniProt 55–356 Author chain B; PDBConstruct 3–304; UniProt 55–356

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 6qcn

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6qcn
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6qcn
Deposition date deposition_date2018-12-29
Structure title titleHuman Sirt2 in complex with ADP-ribose and the inhibitor quercetin
Keywords keywordsDeacylase, Substrate competitive inhibitor, Isoform-selective, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier28.10
Radius of gyration Rg (electron density) rg_electron27.05
Forward intensity I(0) i077048300.00
Molecular weight molecular_weight68978.0 kDa
Excluded volume excluded_volume86385 ų
Envelope volume envelope_volume106850 ų
Hydration-shell volume shell_volume32959 ų
Envelope diameter envelope_diameter95.0
Shell Rg shell_rg34.35
Envelope Rg envelope_rg26.93
Shape Rg shape_rg27.05
Total Rg total_rg27.82
Total atoms total_atoms4831
Residues n_residues599
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax92.0
Rg (real space) rg_real28.01
Rg uncertainty (real space) rg_real_error0.53
I(0) (real space) i0_real7.7050e+07
I(0) uncertainty (real space) i0_real_error1.0950e+06
Rg (reciprocal space) rg_reciprocal28.04
I(0) (reciprocal space) i0_reciprocal77050000.0000
Solution quality estimate total_estimate0.8982
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary31.2
Skewness Skewness skewness0.235
Kurtosis Kurtosis kurtosis-0.462
Angular range angular_range— – 0.2800 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha14650000.0000
Real-space data points n_real_points57
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.895; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.992

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd6qcna_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.31 — DHS-like NAD/FAD-binding domain
Superfamily Superfamily superfamilyc.31.1 — DHS-like NAD/FAD-binding domain
Family Family familyc.31.1.5 — Sir2 family of transcriptional regulators
Domain ID domain_idd6qcnb_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.31 — DHS-like NAD/FAD-binding domain
Superfamily Superfamily superfamilyc.31.1 — DHS-like NAD/FAD-binding domain
Family Family familyc.31.1.5 — Sir2 family of transcriptional regulators

CATH v4.4 (4 domains)

Domain ID domain_id6qcnA01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1220 — TPP-binding domain
Domain ID domain_id6qcnA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology1600 — SIR2/SIRT2 'Small Domain'
Homologous superfamily homologous superfamily10 — SIR2/SIRT2 'Small Domain'
Domain ID domain_id6qcnB01
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily1220 — TPP-binding domain
Domain ID domain_id6qcnB02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology1600 — SIR2/SIRT2 'Small Domain'
Homologous superfamily homologous superfamily10 — SIR2/SIRT2 'Small Domain'

8. Citations (1)

9. Files and Curves (10)